Engine Identification/Information Help

Hello all! I have been in a serious on again/off again relationship with my KZ750 LTD Project. At this point, I am trying to pick up a new engine for her. I'll spare everyone the details of why exactly. (However, on that note, if anyone has an 4-cyl 750 engine, or at least bottom end that they are looking to part with, hit me up)

At any rate, I stumbled across the engine pictured below, and it seems like a pretty good buy, but I'm a little curious about some things. The listing says that it came off of an '81 KZ750, but some covers look a little odd, etc. Can anyone shed a little light onto this? Specifically, whether or not there are going to be major discrepancies in the mounting locations?

Thanks!

smithmm1 wrote: Hello all! I have been in a serious on again/off again relationship with my KZ750 LTD Project. At this point, I am trying to pick up a new engine for her. I'll spare everyone the details of why exactly. (However, on that note, if anyone has an 4-cyl 750 engine, or at least bottom end that they are looking to part with, hit me up)

At any rate, I stumbled across the engine pictured below, and it seems like a pretty good buy, but I'm a little curious about some things. The listing says that it came off of an '81 KZ750, but some covers look a little odd, etc. Can anyone shed a little light onto this? Specifically, whether or not there are going to be major discrepancies in the mounting locations?

Thanks!

Hello, smithmm1, and WELCOME to KZr!

Per www.zedder.com ---

Year & Model '81 KZ750-E2
Color(s) (1) Candy Persimmon Red

(2) Moondust Silver
Frame No. Range (old) KZ750E-012001 - 013721
New VIN Range JKAKZDE1vBA013722 - 032400
Engine No. Range KZ750EE024601 - 062600
Engine No. Location RH top crankcase, below carburetor
Cylinder Mark 0.738L
Cylinder Mark Location LH side
Engine Type 4-stroke, 4-cylinder, DOHC, Air cooled
Bore X Stroke 66.0 X 54.0 mm
Compression Ratio 9.0:1
Maximum HP 74 at 9000 rpm
Maximum Torque 6.4 kg-m at 7500 rpm

Click here > www.zedder.com/Info/81%20KZ750-E2.htm

Good Fortune!

Thanks, Patton!

That looks like a ZR750 engine from around 2000-05 and may require some work to fit it into a KZ750 frame. There have been a couple of topics about it this Summer. A couple of noteworthy features: the ZR has a better oil pump (more flow) & the upper cam chain slipper guide is housed in a bracket bolted to the engine (instead of being fitted into the valve cover).

Fyi: the ZR750 engine nos. begin with KZ750EE

martin_csr wrote: the upper cam chain slipper guide is housed in a bracket bolted to the engine (instead of being fitted into the valve cover).

That change was probably from so many damaged guides from not releasing the tension before installing the cover.
Probably would have been cheaper for Kawasaki to just emboss a warning into the valve cover itself.